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/*
* The Mana Server
* Copyright (C) 2010 The Mana Development Team
*
* This file is part of The Mana Server.
*
* The Mana Server is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* The Mana Server is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with The Mana Server. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef AUTOATTACK_H
#define AUTOATTACK_H
#include <list>
#include <limits>
/**
* Methods of damage calculation
*/
enum DMG_TY
{
DAMAGE_PHYSICAL = 0,
DAMAGE_MAGICAL,
DAMAGE_DIRECT,
DAMAGE_OTHER = -1
};
/**
* Structure that describes the severity and nature of an attack a being can
* be hit by.
*/
struct Damage
{
unsigned short base; /**< Base amount of damage. */
unsigned short delta; /**< Additional damage when lucky. */
unsigned short cth; /**< Chance to hit. Opposes the evade attribute. */
unsigned char element; /**< Elemental damage. */
DMG_TY type; /**< Damage type: Physical or magical? */
unsigned trueStrike : 1; /**< Override dodge calculation */
std::list<size_t> usedSkills; /**< Skills used by source (needed for exp calculation) */
unsigned short range; /**< Maximum distance that this attack can be used from */
Damage(unsigned short base, unsigned short delta, unsigned short cth,
unsigned char element, DMG_TY type = DAMAGE_OTHER,
unsigned short range = std::numeric_limits<unsigned short>::max())
: base(base), delta(delta), cth(cth), element(element), type(type),
trueStrike(false), range(range) {}
};
/**
* Class that stores information about an auto-attack
*/
class AutoAttack
{
public:
AutoAttack(Damage &damage, unsigned int delay, unsigned int warmup)
: mDamage(damage), mTimer(0), mAspd(delay),
mWarmup(warmup && warmup < delay ? warmup : delay >> 2) {}
unsigned short getTimer() const { return mTimer; }
bool tick() { return mTimer ? !--mTimer : false; }
void reset() { mTimer = mAspd; }
bool operator<(const AutoAttack &rhs) const
{ return mTimer < rhs.getTimer(); }
bool isReady() const { return !(mTimer - mWarmup); }
void halt() { if (mTimer >= mWarmup) mTimer = 0; }
void softReset() { if (mTimer >= mWarmup) mTimer = mAspd; }
const Damage &getDamage() const { return mDamage; }
private:
Damage mDamage;
/**
* Internal timer that is modified each tick.
* When > warmup, the attack is warming up before a strike
* When = warmup, the attack triggers, dealing damage to the target *if* the target is still in range.
* (The attack is canceled when the target moves out of range before the attack can hit, there should be a trigger for scripts here too)
* (Should the character automatically persue when the target is still visible in this case?)
* When < warmup, the attack is cooling down after a strike. When in cooldown, the timer should not be soft-reset.
* When 0, the attack is inactive (the character is doing something other than attacking and the attack is not in cooldown)
*/
unsigned short mTimer;
unsigned short mAspd; // Value to reset the timer to (warmup + cooldown)
/**
* Pre-attack delay tick.
* This MUST be smaller than or equal to the aspd!
* So the attack triggers where timer == warmup, having gone through aspd - warmup ticks.
*/
unsigned short mWarmup;
};
/**
* Helper class for storing multiple auto-attacks.
*/
class AutoAttacks
{
public:
/**
* Whether the being has at least one auto attack that is ready.
*/
void add(AutoAttack n);
void clear(); // Wipe the list completely (used in place of remove for now; FIXME)
void start();
void stop(); // If the character does some action other than attacking, reset all warmups (NOT cooldowns!)
void tick(std::list<AutoAttack> *ret = 0);
private:
bool mActive; /**< Marks whether or not to keep auto-attacking. Cooldowns still need to be processed when false. */
std::list < AutoAttack > mAutoAttacks;
};
#endif // AUTOATTACK_H
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